Yii2 Framework Essay 21

Take a look at baseyii.php today.

<?PHP/** * @linkhttp://www.yiiframework.com/* @copyright Copyright (c) Yii software LLC * @licensehttp://www.yiiframework.com/license/ */namespaceYii;use yii\Base\invalidconfigexception;use yii\Base\invalidparamexception;use yii\Base\unknownclassexception;use yii\log\logger;use Yii\di\container;/** Gets the application start timestamp. * Define when the project starts*/defined ('Yii_begin_time') or define ('Yii_begin_time', Microtime (true));/** * This constant defines the framework installation directory. * Define the file address of the YII2 project*/defined ('Yii2_path') or define ('Yii2_path', __dir__);/** * This constant defines whether the application should is in debug mode or not. Defaults to False. * Defines if the Debug of Yii is turned on*/defined ('Yii_debug') or define ('Yii_debug',false);/** * This constant defines in which environment the application is running. Defaults to ' prod ', meaning production environment. * Define this constant in the bootstrap script. The value could be ' prod ' (production), ' Dev ' (development), ' test ', ' staging ', etc. * Defines the environment for YII, whose value can be ' prod ' (productio n), ' Dev ' (development), ' test ', ' staging ' and more*/defined ('yii_env') or define ('yii_env','prod');/** * Whether the the application is running in production environment * project is running in production environment*/defined ('Yii_env_prod') or define ('Yii_env_prod', yii_env = = ='prod');/** * Whether the the application is running in development environment * project is running in development environment*/defined ('Yii_env_dev') or define ('Yii_env_dev', yii_env = = ='Dev');/** * Whether the the application is running in testing environment * Project is running in testing environment*/defined ('yii_env_test') or define ('yii_env_test', yii_env = = ='Test');/** * This constant defines whether error handling should is enabled. Defaults to True. * Define whether to turn on error handler*/defined ('Yii_enable_error_handler') or define ('Yii_enable_error_handler',true);/** * Baseyii is the Core helper class for the YII framework. * Does not use Baseyii directly. Instead, use it child class [[\yii]] which you can replace to * customize methods of Baseyii. * * @author Qiang Xue <[email protected]> * @since 2.0*/ classbaseyii{/** * @var array class map used by the Yii autoloading mechanism.  * The array keys are the class names (without leading backslashes), and the array values * is the corresponding class File paths (or path aliases).     This property mainly affects * how [[AutoLoad ()]] works. * @see AutoLoad ()*/     Public Static$classMap = []; /** * @var \yii\console\application|\yii\web\application the application instance * Yii example of application, Yii's Components are used in this instance.*/     Public Static$app; /** @var Array registered path aliases * @see Getalias () * @see Setalias () * Yii's path alias Map, default @yii refers to To the current directory*/     Public Static$aliases = ['@yii'=__dir__]; /** * Returns A String representing the current version of the YII framework.     * Returns a String representing the current version of the YII framework. * @return String The version of the YII framework*/     Public Staticfunction GetVersion () {return '2.0.3'; }    /** * Translates a path alias into an actual path. * Convert aliases to Real paths **/      Public Staticfunction Getalias ($alias, $throwException =true)    {        /** * strncmp-binary security compare several characters at the beginning of a string * int strncmp (string $str 1, String $str 2, int $len) * AS $alias not start with ' @ ', it's not a Yii alias*/        if(STRNCMP ($alias,'@',1)) {            //Not an alias            return$alias; }        //Get/Position first appeared in the $alias$pos = Strpos ($alias,'/'); //if/does not exist, $root is the entire $alias, otherwise it is $alias in/before the content$root = $pos = = =false? $alias: substr ($alias,0, $pos); //If there are $root aliases        if(Isset (Static:: $aliases [$root]) {            if(Is_string (Static:: $aliases [$root]) {                //if $root the corresponding alias is a string, it is returned directly $aliases [$root] or $aliases [$root]. substr ($alias, $pos)//when the $root is $alias return $aliases [$root], the remaining string is $alias after the $root is removed on the stitching                return$pos = = =false?Static:: $aliases [$root]:Static:: $aliases [$root]. substr ($alias, $pos); } Else {                //Otherwise, to traverse the entire $aliases [$root] array, find the same value $name as $alias, and return $path. substr ($alias, strlen ($name))//is actually returned $path stitching on $alias After removing the $root, the remainder of the string                foreach(Static:: $aliases [$root] as$name =$path) {                    if(Strpos ($alias.'/', $name.'/') ===0) {                        return$path. substr ($alias, strlen ($name)); }                }            }        }        if($throwException) {Throw NewInvalidparamexception ("Invalid Path alias: $alias");//Throw hint}Else {            return false; }    }

Yii2 Framework Essay 21